Genesis 1 bible question?

The day that light and dark was created had nothing to do with earth. It was about the stars, moon and sun. So we know that God planned every thing out and placing these light and dark items was important and needed for us but, the earth had to be done in layers, stages and it was critical to us coming and living here, not on a star, the moon or of course not the sun... do you understand the difference now?